It's a scorcher here in Silicon Valley, and the electricity load is increasing as air conditioners get throttled. While we haven't had any rolling blackouts, it's good to figure out ways to reduce demand including going to places with air conditioning instead of cranking your own up. I'm particularly good at this since my place does not have AC.
If you want to see how the weather is impacting the grid, be sure to check out the California Independent System Operator Status Board to see the current energy loads.
Feedback in the form of the kill-o-watt and other tools helps adjust your impact.